Ponmudi Dam
The Ponmudi Dam is a concrete gravity dam built across the Panniyar river which is a tributary of Periyar river at Konnathady panchayath of Konnathadi village in Idukki district of Kerala, India. The dam was constructed in 1963 as a part of a hydroelectric project. Construction was led by E.U.Philipose, Superintending Engineer, Kerala State Electricity Board. It has a length of 288.80 metres (947.5 ft). The hydropower component of the dam has an installed capacity of 30 MW with firm power of 17 MW, generating 158 GWh annually. Taluks through which the river flow are Udumbanchola, Devikulam, Kothamangalam, Muvattupuzha, Kunnathunadu, Aluva, Kodungalloor and Paravur.
| Ponmudi Dam | |
|---|---|
Ponmudi dam and reservoir | |
Location of Ponmudi Dam in Kerala Ponmudi Dam (India) | |
| Country | India |
| Location | Idukki, Kerala |
| Coordinates | 9°57′37″N 77°03′24″E |
| Purpose | Power |
| Status | Operational |
| Opening date | 1963 |
| Owner(s) | Kerala State Electricity Board |
| Dam and spillways | |
| Type of dam | Gravity dam |
| Impounds | Panniyar river |
| Height (foundation) | 57.60 m (189.0 ft) |
| Length | 288.8 m (948 ft) |
| Elevation at crest | 701.35 m (2,301.0 ft) |
| Spillways | 3 nos, radial gates, each of size 10.97 x6.4 m |
| Spillway type | Ogee type |
| Spillway capacity | 1416.3 m³/s |
| Reservoir | |
| Creates | Ponmudi Reservoir |
| Total capacity | 51,540,000 m3 (1.820×109 cu ft) |
| Active capacity | 47,400,000 m3 (1.67×109 cu ft) |
| Catchment area | 221.75 km2 (85.62 sq mi) |
| Maximum water depth | 708.66 m (2,325.0 ft) |
| Normal elevation | 707.75 m (2,322.0 ft) |
| Panniar Power Station | |
| Coordinates | 9°58′23″N 77°01′41″E |
| Operator(s) | Kerala State Electricity Board |
| Commission date | 1963 |
| Turbines | 2 x 16.2 MW (Francis-type) |
| Installed capacity | 32.4 MW |
| Annual generation | 158 MU |
| Website Official website | |
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